﻿#define DISABLE_XAML_GENERATED_BREAK_ON_UNHANDLED_EXCEPTION

using CC98.Metro.Common;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Composition;
using System.Composition.Hosting;
using System.Reflection;
using Windows.ApplicationModel;
using Windows.ApplicationModel.Activation;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
using CC98.Data;

namespace CC98.Metro
{
    /// <summary>
    /// Provides application-specific behavior to supplement the default Application class.
    /// </summary>
    sealed partial class App : Application
    {
        /// <summary>
        /// Current application object
        /// </summary>
        public static new App Current { get; private set; }

        /// <summary>
        /// Initializes the singleton Application object.  This is the first line of authored code
        /// executed, and as such is the logical equivalent of main() or WinMain().
        /// </summary>
        public App()
        {
            App.Current = this;
            this.InitializeComponent();
            this.Suspending += OnSuspending;
            // Initialize container
            ContainerConfiguration containerCfg = new ContainerConfiguration();
            containerCfg.WithAssemblies(new Assembly[] { typeof(MetroUtility).GetTypeInfo().Assembly, typeof(Utility).GetTypeInfo().Assembly });
            this.CompositionHost = containerCfg.CreateContainer();
        }

        /// <summary>
        /// Composition part host container
        /// </summary>
        public CompositionHost CompositionHost { get; private set; }

        /// <summary>
        /// Invoked when the application is launched normally by the end user.  Other entry points
        /// will be used when the application is launched to open a specific file, to display
        /// search results, and so forth.
        /// </summary>
        /// <param name="args">Details about the launch request and process.</param>
        protected override async void OnLaunched(LaunchActivatedEventArgs args)
        {
            // Set language to cn
            Windows.Globalization.ApplicationLanguages.PrimaryLanguageOverride = "cn";
            // Load State and set content
            if (args.PreviousExecutionState == ApplicationExecutionState.Running)
            {
                Window.Current.Activate();
                return;
            }

            var rootFrame = new Frame();
            SuspensionManager.RegisterFrame(rootFrame, "AppFrame");
            // Initialize
            CommandHandler.Initialize(rootFrame);

            if (args.PreviousExecutionState == ApplicationExecutionState.Terminated)
            {
                await SuspensionManager.RestoreAsync();
            }

            if (rootFrame.Content == null)
            {
                if (!rootFrame.Navigate(typeof(Pages.Splash), args.SplashScreen))
                {
                    throw new Exception("Failed to create main page");
                }
            }
            // Active
            Window.Current.Content = rootFrame;
            Window.Current.Activate();
        }

        /// <summary>
        /// Invoked when application execution is being suspended.  Application state is saved
        /// without knowing whether the application will be terminated or resumed with the contents
        /// of memory still intact.
        /// </summary>
        /// <param name="sender">The source of the suspend request.</param>
        /// <param name="e">Details about the suspend request.</param>
        private async void OnSuspending(object sender, SuspendingEventArgs e)
        {
            var deferral = e.SuspendingOperation.GetDeferral();
            await SuspensionManager.SaveAsync();
            deferral.Complete();
            AccountManager.Instance.Save();
        }
    }
}
